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Summary of oocyst infectivity results for solar exposure experiments on July 9, July 15, and August 25. White columns are light-exposed treatments. Gray bars are dark control treatments. Lab stock infectivity for each experiment was 5.8% (July 9), 5.3% (July 15), and 10.4% (August 25). The July 9 and July 15 experiments were performed with the same oocyst lot. n, number of individual flow chambers.
